Who Made It To Marianas Trench

10 Facts You Didn&#39;t Know About Sharks . Sharks inspire our curiousity and our fear of the unknown. They rule the watery depths where 95% of the Earth&#39;s oceans remain unexplored by humans. Here are some fast facts to pique your interest in these fascinating creatures. - See more at: http://goo.gl/prhJ4y